Implements external array access for mips.

tests/standalone/standalone.status

 # Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # WARNING:
 # Tests using the multitest feature where failure is expected should *also* be
 # listed in tests/lib/analyzer/analyze_tests.status without the "standalone"
 # prefix.
 
 package/invalid_uri_test: Fail, OK # Fails intentionally
@@ skipping 152 matching lines @@
 [ $compiler == dart2js && $checked ]
 io/http_read_test: Skip # Timeout TODO(ngeoffray): investigate
 io/list_input_stream_test: Skip # Timeout TODO(ngeoffray): investigate
 io/http_parser_test: Fail # dartbug.com/11273
 
 [ $compiler == dart2dart ]
 # Skip until we stabilize language tests.
 *: Skip
 
 [ $arch == arm || $arch == simarm ]
-*: Skip # Many of these tests are still flaky on arm, so skipping until we
-        # actually start working on implementing the needed features.
+out_of_memory_test: Crash
+typed_data_test: Timeout
 
 [ $arch == mips ]
 *: Skip
 
 [ $arch == simmips ]
-*: Skip
+left_shift_bit_and_op_test: Fail
+out_of_memory_test: Crash
+typed_data_test: Timeout
+